David H Levenson

Summary

Affiliation: University of California
Country: USA

Publications

  1. ncbi request reprint Visual pigments of marine carnivores: pinnipeds, polar bear, and sea otter
    David H Levenson
    Scripps Institution of Oceanography, UCSD, La Jolla, CA, USA
    J Comp Physiol A Neuroethol Sens Neural Behav Physiol 192:833-43. 2006
  2. pmc Genetic evidence for the ancestral loss of short-wavelength-sensitive cone pigments in mysticete and odontocete cetaceans
    D H Levenson
    Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093 0204, USA
    Proc Biol Sci 270:673-9. 2003
  3. ncbi request reprint Intravascular pressure profiles in elephant seals: hypotheses on the caval sphincter, extradural vein and venous return to the heart
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 145:123-30. 2006
  4. ncbi request reprint Cardiac output and muscle blood flow during rest-associated apneas of elephant seals
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 144:105-11. 2006
  5. ncbi request reprint Sub-ice foraging behavior of emperor penguins
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    J Exp Biol 203:3275-8. 2000
  6. ncbi request reprint Regional heterothermy and conservation of core temperature in emperor penguins diving under sea ice
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 135:477-87. 2003
  7. ncbi request reprint Stroke frequencies of emperor penguins diving under sea ice
    R P Van Dam
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla 92093 0204, USA
    J Exp Biol 205:3769-74. 2002
  8. ncbi request reprint Temperature regulation in emperor penguins foraging under sea ice
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 129:811-20. 2001
  9. ncbi request reprint Mutational changes in S-cone opsin genes common to both nocturnal and cathemeral Aotus monkeys
    David H Levenson
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, La Jolla, San Diego, California, USA
    Am J Primatol 69:757-65. 2007
  10. ncbi request reprint Blood oxygen depletion during rest-associated apneas of northern elephant seals (Mirounga angustirostris)
    T K Stockard
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, CA 92093 0204, USA
    J Exp Biol 210:2607-17. 2007

Collaborators

Detail Information

Publications10

  1. ncbi request reprint Visual pigments of marine carnivores: pinnipeds, polar bear, and sea otter
    David H Levenson
    Scripps Institution of Oceanography, UCSD, La Jolla, CA, USA
    J Comp Physiol A Neuroethol Sens Neural Behav Physiol 192:833-43. 2006
    ..Rod photoreceptor responses for all three species were as predicted by the genetic data...
  2. pmc Genetic evidence for the ancestral loss of short-wavelength-sensitive cone pigments in mysticete and odontocete cetaceans
    D H Levenson
    Scripps Institution of Oceanography, 9500 Gilman Drive, La Jolla, CA 92093 0204, USA
    Proc Biol Sci 270:673-9. 2003
    ..Thus, in the absence of dramatic homoplasy, all modern cetaceans lack functional SWS cone visual pigments and, by extension, the visual capacities that such pigments typically support...
  3. ncbi request reprint Intravascular pressure profiles in elephant seals: hypotheses on the caval sphincter, extradural vein and venous return to the heart
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 145:123-30. 2006
    ..e., the extradural vein) is necessary to allow adequate venous return for maintenance of high cardiac outputs and blood pressure during eupnea...
  4. ncbi request reprint Cardiac output and muscle blood flow during rest-associated apneas of elephant seals
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 144:105-11. 2006
    ....
  5. ncbi request reprint Sub-ice foraging behavior of emperor penguins
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    J Exp Biol 203:3275-8. 2000
    ....
  6. ncbi request reprint Regional heterothermy and conservation of core temperature in emperor penguins diving under sea ice
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 135:477-87. 2003
    ....
  7. ncbi request reprint Stroke frequencies of emperor penguins diving under sea ice
    R P Van Dam
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego, La Jolla 92093 0204, USA
    J Exp Biol 205:3769-74. 2002
    ..However, a stroke/glide pattern was evident with more than 50% of strokes associated with a stroke interval >1.6 s, and with lower stroke frequency associated with increased dive duration...
  8. ncbi request reprint Temperature regulation in emperor penguins foraging under sea ice
    P J Ponganis
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, La Jolla, CA 92093 0204, USA
    Comp Biochem Physiol A Mol Integr Physiol 129:811-20. 2001
    ..Rather, temperature profiles during dives are consistent with a model of regional heterothermy with conservation of core temperature, peripheral vasoconstriction, and cooling of an outer body shell...
  9. ncbi request reprint Mutational changes in S-cone opsin genes common to both nocturnal and cathemeral Aotus monkeys
    David H Levenson
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, La Jolla, San Diego, California, USA
    Am J Primatol 69:757-65. 2007
    ....
  10. ncbi request reprint Blood oxygen depletion during rest-associated apneas of northern elephant seals (Mirounga angustirostris)
    T K Stockard
    Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, San Diego, CA 92093 0204, USA
    J Exp Biol 210:2607-17. 2007
    ..Such hypoxemic tolerance is necessary in order to allow dissociation of O(2) from hemoglobin and provide effective utilization of the blood O(2) store...